Apparatus for cleaning metallic articles



June 1939- R. FRITZSCHE ET AL 2,163,276

APPARATUS FOR CLEANING METALLIC ARTICLES Filed Aug. 3 1937 Patented June 20, 1939 PATENT orrlcs APPARATUS FOR CLEANING mn'rsmc ARTICLES Rudolf Fritzsch and Arno Bauer, Berlin-Chan lottenburg, Germany, assignors to Siemens & Halske, Aktiengesellschalt, Siemensstadt, near Berlin, Germany, a corporation of Germany Application August 3, 1937, Serial No. 15?;076

Germany November 24, 1936 3 Claims. (Cl. 266- 1) Our invention relates to apparatus-for cleaning metallic articles. In such apparatus the objects to becleaned are placed in a perforated drum by means of which they are moved about in a cleaning bath. To this end, a suitable cleaning or pickling solution is employed in order to subsequently facilitate the electroplating of the metallic articles; It has been hitherto customary to movethe containers with the articles to be cleaned in the cleaning solution either byhand or by means of a mechanical drive. However, such apparatus are, as 'a rule, expensive and unhandy in operation.

The object of our invention is to provide an economical cleaningapparatus of simple construction to operate. To this end, the apparatus consists of two inclined rollers spaced in parallel relation to each' other. The rollers project preferably from above into the tank and are rog0 tated in the same direction. The container designed in the form of a sifting drum rests on the two rollers and is thus caused to rotate by the roller drive. In this manner, the articles contained in the drum are flung about and are thus 25 thoroughly cleaned by the solution contained therein.

In the accompanying drawing is shown an embodiment of the cleaning apparatus according to the invention. 80 Fig. 1 shows a sectional elevation.

Fig. 2a top view of the novel cleaning apparatus, and,

I Fig. 3 is a detailconcerning a roller modiflca tion.

. 3 The two rollers w, each journalled in a bearing a at the upper end of the tank I) and rotated in the same direction by means of an electric motor (not shown) are inclined 'at a givenangle to the inner wall of the tank b.conta inin8 40 the cleaning or pickling solution. The driving rollers are spaced in parallel relation to each other and may consist of wood or of any material 013- such nature as not to be corroded by the cleaning solution. Within the tank b-is provided 45 a supporting arm t bent at its lower end to provide a bearing support both for ,the perforated drum k and for the driving rollers 10. As will be seen from Fig. 2 the bent portion has two outwardly projecting arms 9' and an extension e 50 provided with pivots in the form of thrust bear with protuberances f shown in Fig. 3' or be roughened in any suitable manner so as to facilitate --the rotation of the drum it.

-are thus cleaned thoroughly, all the more as the cleaning liquid continuously flows into and out of the interior of the drum through its perforations as well as through the upper opening thereof which lies partly below the liquid level. 10 The arrangement of. the main bearings 41 for s the rollers 10 outside the liquid'permits a par-, ticularly good attendance of the bearings. In. order to completely avoid the bearings g and e within the liquid the lowerfree ends of the roll- 16 ers w may be supported only in the long bearing a, Fig. 1, and be provided with heavy end collars u, shown in Fig. 3, which support the lower edge of the drum is, To facilitate the cleaning of the liquid tank the bearings a may be so air-. ranged as to be rotatable about a transverse pivot (i so that the rollers may be entirely swun'g out of the tank.

We claim as our invention:

1. A cleanin apparatus for cleaning articles in a. liquid, comprising a perforated cylindrical tumbling basket containing the articles, a tank containing the cleaning liquid, inclined rollers journalled adjacent to the tank edge and spaced substantially in parallel to one another and ex- Q tending a suitable distance into the liquid, said basket being removably supported on the periphery of said rollers to be rotated in the liquid when both rollers are driven in the same direction, and means for supporting said basket at its 35.

otally attached to the tank edge to permit the tilting of said rollers a suitable depth into the tank liquid in-an inclined position, said .basket being removably supported in the liquid in aninclined position on the periphery of id u.- ers to be rotated. in the liquid when bothrollers are driven inthe same directbm-and means for '80 supporting said basket at end in the direction of its rotation axis;

3. A cleaning apparatus for articles in a liquid, comprising a-perforated cylindrical tumbling basket containing the articles, a tank is said rollers having a collar at its lower end for removably supporting said basket in an inclined 'position on its periphery and at its end, to be rotated in the liquid when both rollers are driven in the same direction.

RUDOLF FRITZSCHE.

ARNO AUER"; 

